//
//  NSString+Three.m
//  Xspcf
//
//  Created by 小小算盘 on 16/1/27.
//  Copyright © 2016年 小小算盘. All rights reserved.
//

#import "NSString+Three.h"
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <net/if.h>

#define IOS_CELLULAR    @"pdp_ip0"
#define IOS_WIFI        @"en0"
#define IOS_VPN         @"utun0"
#define IP_ADDR_IPv4    @"ipv4"
#define IP_ADDR_IPv6    @"ipv6"

@implementation NSString (Three)
+(NSString *)ChangeNumberFormat:(NSString *)num
{
    if (num == nil) {
        return @"";
    }
    int count = 0;
    long long int a = num.longLongValue;
    while (a != 0)
    {
        count++;
        a /= 10;
    }
    NSMutableString *string = [NSMutableString stringWithString:num];
    NSMutableString *newstring = [NSMutableString string];
    while (count > 3) {
        count -= 3;
        NSRange rang = NSMakeRange(string.length - 3, 3);
        NSString *str = [string substringWithRange:rang];
        [newstring insertString:str atIndex:0];
        [newstring insertString:@"," atIndex:0];
        [string deleteCharactersInRange:rang];
    }
    [newstring insertString:string atIndex:0];
    return newstring;

}
+(BOOL)checkTel:(NSString *)str
{
    if (str.length == 11 && [str characterAtIndex:0] == '1') {
        return YES;
    } else {
        return NO;
    }
}

-(NSString *)stringFromUTF8
{
    NSString *encodedString=[self stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"~" withString:@"%7E"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"!" withString:@"%21"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"@" withString:@"%40"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"$" withString:@"%24"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"&" withString:@"%26"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"*" withString:@"%2A"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"(" withString:@"%28"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@")" withString:@"%29"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"_" withString:@"_"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"=" withString:@"%3D"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@";" withString:@"%3B"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@":" withString:@"%3A"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"'" withString:@"%27"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"/" withString:@"%2F"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"?" withString:@"%3F"];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"." withString:@"."];
    encodedString=[encodedString stringByReplacingOccurrencesOfString:@"," withString:@"%2C"];
    
    return encodedString;
}
//获取设备IP地址
-(NSString *)getIPAddress:(BOOL)preferIPv4
{
    NSArray *searchArray = preferIPv4 ?
    @[ IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :
    @[ IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
    
    NSDictionary *addresses = [self getIPAddresses];
   // NSLog(@"addresses: %@", addresses);
    
    __block NSString *address;
    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
     {
         address = addresses[key];
         if(address) *stop = YES;
     } ];
    return address ? address : @"0.0.0.0";
}

- (NSDictionary *)getIPAddresses
{
    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];
    
    // retrieve the current interfaces - returns 0 on success
    struct ifaddrs *interfaces;
    if(!getifaddrs(&interfaces)) {
        // Loop through linked list of interfaces
        struct ifaddrs *interface;
        for(interface=interfaces; interface; interface=interface->ifa_next) {
            if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) {
                continue; // deeply nested code harder to read
            }
            const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;
            char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
            if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {
                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                NSString *type;
                if(addr->sin_family == AF_INET) {
                    if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv4;
                    }
                } else {
                    const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr;
                    if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv6;
                    }
                }
                if(type) {
                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                    addresses[key] = [NSString stringWithUTF8String:addrBuf];
                }
            }
        }
        // Free memory
        freeifaddrs(interfaces);
    }
    return [addresses count] ? addresses : nil;
}

+(BOOL)validateidentityCard:(NSString *)identityCard
{
    BOOL flag;
    if (identityCard.length<=0) {
        flag = NO;
        return flag;
    }
    NSString *regex = @"^(\\d{14}|\\d{17})(\\d|[xX])$";
    NSPredicate *identityCardPredicare = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",regex];
    return [identityCardPredicare evaluateWithObject:identityCard];
}

@end
